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| 1 #!/usr/bin/python |
| 2 # Copyright 2014 Google Inc. All rights reserved. |
| 3 # |
| 4 # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 # you may not use this file except in compliance with the License. |
| 6 # You may obtain a copy of the License at |
| 7 # |
| 8 # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 # |
| 10 # Unless required by applicable law or agreed to in writing, software |
| 11 # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 # See the License for the specific language governing permissions and |
| 14 # limitations under the License. |
| 15 |
| 16 import argparse |
| 17 import sys |
| 18 import textwrap |
| 19 |
| 20 is_python3 = bool(sys.version_info.major == 3) |
| 21 |
| 22 |
| 23 ALL_PRAGMAS = ['no cover', 'no win32', 'python2', 'python3', 'untested', |
| 24 'win32'] |
| 25 DEFAULT_PRAGMAS = ALL_PRAGMAS[:] |
| 26 |
| 27 if is_python3: |
| 28 DEFAULT_PRAGMAS.remove('python3') |
| 29 else: |
| 30 DEFAULT_PRAGMAS.remove('python2') |
| 31 |
| 32 if sys.platform == 'win32': |
| 33 DEFAULT_PRAGMAS.remove('win32') |
| 34 else: |
| 35 DEFAULT_PRAGMAS.remove('no win32') |
| 36 |
| 37 |
| 38 def add_arguments(parser): |
| 39 parser.add_argument('--no-pragmas', action='store_true', default=False, |
| 40 help='Show all uncovered lines (no pragmas).') |
| 41 parser.add_argument('--path', action='append', default=[], |
| 42 help='Prepend given directories to sys.path.') |
| 43 parser.add_argument('--pragma', action='append', default=[], |
| 44 help=('The coverage pragmas to honor ' |
| 45 '(defaults to %s).' % DEFAULT_PRAGMAS)) |
| 46 parser.add_argument('--show', action='append', default=[], |
| 47 help='Show code protected by the specified pragmas ' |
| 48 '(uses all pragmas *except* for the ones ' |
| 49 'specified).') |
| 50 parser.add_argument('--show-missing', action='store_true', |
| 51 default=False, help='Show missing lines.') |
| 52 parser.add_argument('--source', action='append', default=[], |
| 53 help='Limit coverage data to the given directories.') |
| 54 |
| 55 parser.formatter_class = argparse.RawTextHelpFormatter |
| 56 parser.epilog = textwrap.dedent(""" |
| 57 Valid pragma values are: |
| 58 'no cover': The default coverage pragma, this now means we |
| 59 truly cannot cover it. |
| 60 'no win32': Code that only executes when not on Windows. |
| 61 'python2': Code that only executes under Python2. |
| 62 'python3': Code that only executees under Python3. |
| 63 'untested': Code that does not yet have tests. |
| 64 'win32': Code that only executes on Windows. |
| 65 |
| 66 In typ, we aim for 'no cover' to only apply to code that executes only |
| 67 when coverage is not available (and hence can never be counted). Most |
| 68 code, if annotated at all, should be 'untested', and we should strive |
| 69 for 'untested' to not be used, either. |
| 70 """) |
| 71 |
| 72 |
| 73 def argv_from_args(args): |
| 74 argv = [] |
| 75 if args.no_pragmas: |
| 76 argv.append('--no-pragmas') |
| 77 for arg in args.path: |
| 78 argv.extend(['--path', arg]) |
| 79 for arg in args.show: |
| 80 argv.extend(['--show', arg]) |
| 81 if args.show_missing: |
| 82 argv.append('--show-missing') |
| 83 for arg in args.source: |
| 84 argv.extend(['--source', arg]) |
| 85 for arg in args.pragma: |
| 86 argv.extend(['--pragma', arg]) |
| 87 return argv |
| 88 |
| 89 |
| 90 def main(argv=None): |
| 91 parser = argparse.ArgumentParser() |
| 92 add_arguments(parser) |
| 93 args, remaining_args = parser.parse_known_args(argv) |
| 94 |
| 95 for path in args.path: |
| 96 if path not in sys.path: |
| 97 sys.path.append(path) |
| 98 |
| 99 try: |
| 100 import coverage |
| 101 from coverage.execfile import run_python_module, run_python_file |
| 102 except ImportError: |
| 103 print("Error: coverage is not available.") |
| 104 sys.exit(1) |
| 105 |
| 106 cov = coverage.coverage(source=args.source) |
| 107 cov.erase() |
| 108 cov.clear_exclude() |
| 109 |
| 110 if args.no_pragmas: |
| 111 args.pragma = [] |
| 112 |
| 113 args.pragma = args.pragma or DEFAULT_PRAGMAS |
| 114 |
| 115 if args.show: |
| 116 args.show_missing = True |
| 117 for pragma in args.show: |
| 118 if pragma in args.pragma: |
| 119 args.pragma.remove(pragma) |
| 120 |
| 121 for pragma in args.pragma: |
| 122 cov.exclude('pragma: %s' % pragma) |
| 123 |
| 124 ret = 0 |
| 125 cov.start() |
| 126 try: |
| 127 if remaining_args[0] == '-m': |
| 128 run_python_module(remaining_args[1], remaining_args[1:]) |
| 129 else: |
| 130 run_python_file(remaining_args[0], remaining_args) |
| 131 except SystemExit as e: |
| 132 ret = e.code |
| 133 cov.stop() |
| 134 cov.save() |
| 135 cov.report(show_missing=args.show_missing) |
| 136 return ret |
| 137 |
| 138 |
| 139 if __name__ == '__main__': |
| 140 sys.exit(main()) |
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